Xanthatin synergizes with cisplatin to suppress homologous recombination through JAK2/STAT4/BARD1 axis in human NSCLC cells.

Xanthatin synergizes with cisplatin to suppress homologous recombination through JAK2/STAT4/BARD1 axis in human NSCLC cells.
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黄嘌呤与顺铂协同抑制人非小细胞肺癌细胞JAK 2/STAT 4/BARD 1轴同源重组

DOI:
10.1111/jcmm.16271
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发表时间:
2021-03
影响因子:
5.3
通讯作者:
Gao Y
Gao Y
中科院分区:
医学2区
文献类型:
--
作者:
Zhang J;Yang S;Guan H;Zhou J;Gao Y

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黄苷(Xanthatin,Xa)是从植物苍耳属(XanthiumL.)具有令人印象深刻的抗肿瘤活性,但Xa在非小细胞肺癌(NSCLC)中的作用尚不清楚。我们发现Xa抑制NSCLC细胞的增殖、迁移、侵袭和诱导凋亡。RNA测序和基因组富集分析显示Xa显著激活A549细胞中的p53通路,并抑制E2 F靶点、G2 M检查点和MYC靶点。在这些改变的基因中,由Xa触发的下调基因BARD 1被确定为参与Xa的抗肿瘤作用的候选基因,因为其在同源重组(HR)中起重要作用。进一步的研究表明,Xa通过BARD 1/BRCA 1/RAD 51轴抑制HR,这增强了细胞对顺铂的敏感性。机制研究表明Xa通过JAK 2/STAT 4途径抑制BARD 1。我们的研究表明Xa是一种很有前途的治疗非小细胞肺癌的药物,特别是与常规化疗联合使用。
Xanthatin (Xa) is a bicyclic sesquiterpene lactone identified from the plant Xanthium L. with impressive antitumor activity, but the role of Xa in non‐small cell lung cancer (NSCLC) is not known. Here we found that Xa inhibits proliferation, migration, invasion and induces apoptosis in NSCLC cells. RNA sequencing and Gene set enrichment analysis revealed that Xa significantly activates p53 pathway and suppresses E2F targets, G2M checkpoint and MYC targets in A549 cells. Among these changed genes, the down‐regulated gene BARD1 triggered by Xa was identified as a candidate involved in Xa’s antitumor effect because of its vital role in homologous recombination (HR). Further studies demonstrated that Xa inhibits HR through the BARD1/BRCA1/RAD51 axis, which enhances cell sensitivity to cisplatin. Mechanistic studies showed that Xa inhibits BARD1 through the JAK2/STAT4 pathway. Our study revealed that Xa is a promising drug to treat NSCLC, especially in combination with conventional chemotherapy.
DOI: 10.1158/0008-5472.can-16-1151
发表时间: 2017-01-01
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发表时间: 2019-06-01
影响因子: 5.3
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